SHA1SUM(1) User Commands

NAME sha1sum - compute and check SHA1 message digest


DESCRIPTION Print or check SHA1 (160-bit) checksums. With no FILE, or when FILE is -, read standard input.

   -b, --binary
          read in binary mode

   -c, --check
          read SHA1 sums from the FILEs and check them

   -t, --text
          read in text mode (default)

The following two options are useful only when verifying checksums: –status don’t output anything, status code shows success

   -w, --warn
          warn about improperly formatted checksum lines

   --help display this help and exit

          output version information and exit

   The  sums  are  computed  as described in FIPS-180-1.  When checking, the input should be a former output of this program.  The default mode is to print a line with checksum, a character indicating
   type (‘*’ for binary, ‘ ’ for text), and name for each FILE.

AUTHOR Written by Ulrich Drepper, Scott Miller, and David Madore.

REPORTING BUGS Report bugs to

COPYRIGHT Copyright © 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License There is NO WARRANTY, to the extent permitted by law.

SEE ALSO The full documentation for sha1sum is maintained as a Texinfo manual. If the info and sha1sum programs are properly installed at your site, the command

          info sha1sum

   should give you access to the complete manual.

sha1sum 5.97 January 2007